San Antonio is baking again today, Tuesday, with mostly sunny skies, a high near 98°F, and afternoon heat index values climbing as high as 106°F, so if you’ve got errands, yard work, or a River Walk stroll on the list, get it done before the sun climbs high.
Today’s Setup
The National Weather Service says a Heat Advisory is in effect from noon to 7 PM CT for the Coastal Plains and Rio Grande Plains, where heat index readings could hit 108-110°F. San Antonio sits just under that advisory threshold, but forecasters note it’ll “still be hot nonetheless,” with our own heat index topping out near 106°F this afternoon. Winds stay light out of the south-southeast at 5 to 10 mph, and skies stay dry — 0% rain both today and tonight.
Best Window To Be Outside
Mornings before 10 AM CT are your friend this week — lows only dip to around 76°F overnight, so it’s warm even at sunrise, but it beats the midday blast. If you’re fishing a Hill Country tank or a spot along the San Antonio River, cast early with a crankbait lure set before the bite (and your patience) fades in the heat. Golfers should aim for a sunrise tee time and pack a golf GPS watch to keep the round moving quickly off the green.
Heat Risk Through Wednesday
No rain, no severe weather, and no flood concerns for our area today — the Weather Prediction Center’s excessive rainfall risk is focused on the Northeast, nowhere near South Central Texas. The real story here is the heat: Wednesday looks nearly identical, with a high near 99°F and heat index values again pushing past 105°F, so this isn’t a one-day spike. Limit strenuous outdoor activity in the afternoon, especially if you’re near Lackland or Fort Sam Houston with outdoor training scheduled.
What To Wear Or Bring
Light, breathable layers and constant hydration are non-negotiable. Check out outdoor gear deals for warm-weather essentials. If you’re grilling tonight, a propane gas grill keeps you off a hot patio less time than charcoal, and an instant-read meat thermometer plus a grill brush and scraper set make quick work of burgers, steaks, or grilled chicken with corn on the cob — actually a great smoke tri-tip hack if you want to switch things up. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Tonight’s Big Show
Lionel Richie and Earth, Wind & Fire bring “Sing a Song All Night Long” to Frost Bank Center tonight, and conditions for the evening are pleasant for an outdoor arrival — still warm in the upper 80s at showtime, easing toward 78°F later. Grab tickets on SeatGeek and a Lionel Richie t-shirt before you head out, and check our concert weather breakdown for arrival timing. Looking ahead, Hamilton rolls into the Majestic Theatre on Friday, July 31 — an indoor show, so weather’s a non-issue there.
Next Few Days
Expect the hot, dry pattern to hold through the rest of the week, with highs flirting with the upper 90s to near 100°F and heat index values regularly topping 105°F. No rain relief is in sight, so keep treating every afternoon like advisory-level heat, even on days San Antonio technically falls just outside the boundary.
